Internal-combustion engine.



Patented Aug. 20, 1918..

F. 0. SHEPHERD.

WTERNRL COMBUSUON ENGINE.

APPLICATION FILED FEB. 28. 191B,

A Z Z, WV/E FRANK D. SHEPHERD, F SALT Z'JLIZE Cll'ff'l,

INTERNAL-COMBUSTEQN ENG-E3333.

Specification of Letters Eat-eat.

Patented Aug. 28, 191%.

Application filed February 23, 1918. Serial tic, 319,693.

To all whom it may camera:

Be it known that l, FRANK D. SHEPHERD, of Salt Lake City, in the county of Salt Lake, and in the State of Utah, have invented a certain new and useful Improvement in Internal-Combustion Engines, and do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to internal combustion engines and my object is to provide in an advantageous associated form, a spark plug, or a priming cock, or both, and the containerior the spring of the engine puppet valve, and for the attainment of my object, my invention consists in the structure and the parts thereof constructed and arranged, substantially as hereinafter specified and claimed.

In the accompanying drawings, 1 illustrate several t'orms in which my invention may be embhdied, and in such drawl Figure 1 is a vertical section of a combined spring container and guide of a puppet valve, and spark plu Fig. 2 is a bottom plan view thereof;

Fig. 3 is a detail view in side elevation, With a portion broken away of the spark plug shown in Figs. 1 and 2;

1g. dis a vertical section similar to Fig. 1, showing a diiierent form oflsparh plug and a primer cock;

Fig. 5 is a like view showing yet another form of my invention.

In. my Patents No. 1,140,378 issued September 18, 1917, and No. 1,252,501 issued 1 January 8, 1918, and in numerous pending all applications, are disclosed certain improvements in puppet valves, in which the valve seating means comprises a shell or container for the seating spring that is secured or attached to the cylinder head to one side of the cylinder, and with some styles of engine it is impossible With my puppet valve construction, except at great expense, to place the spark plug at the center of the cylindeiz By associating the spark plug with said shell or container, as in accordance with my pres ent invention, the application of my puppet valve to the old style engines may he very cheaply made, and-Without any change in the engine head in any respect, and While the advantageous center fire is not available, yet I am able to apply the spark plug to great advantage as to efficiency in its trio location, and when the advar's of toll utilization of the fuel that come from the use of my puppet valve are taken into account, it will he found that my present invention gives highly superior results.

ll'ith the construction of the cylinder 10, its head l1, and the mechanism for lifting the puppet valve 12 oii its seat, my invention is not concerned and in these respects the construction may he anything desired. The valve 1.2 yioldingly held to its seat and re turned there when lifted, by a stem 13 on its upper side that passes across the port 1 1, and through a guide hole in the inner end of a shell 0: container 15 which has a threaded end that is screwed into a hole in the cy inder head. lhe outer end of the stern reaches into the shell chamber 1'? Where it has a head 130 against which one end of the spring 150 hears, the other end of the spring hearing against the outer end, or cover 160. The container, and the s ring device may have any of the various norms of my patents and applications mentioned before; or any other forms, so that it Will he understood that What I show in the draW- ings in v illustrative and not restric-, tire o n In ,c tion the shell or container around the central hole which forms the guide for the valve stem 13, 1 provide preferably a plurality of chambers that reach from the inner end of shell quite close to the hot-tom or" the spring chamber 17, and in one. of these chambers I mount a spark plug, and in another a priming cock so that there 1I11 he thus assembled as one unit, the oiintainer and valve stem guide, the s ark plug and priming? cock.

I "ing to What is shown in Figs. 1, 2 and 3, the chambers 18 around the valve stein guide hole are larger in diameter for subs .tially hall their length from their inner end (nit-Ward so that an annular said collar 21 by a threaded thimhle or hush:

ing which is screwed into the inner end oi the ehamher thus the spark plug J (1 portion of I l I priming cock 39 and the screwing of each of the same into engagement with the interme diate threaded portion 41 of the chamber, and the desired gas-tight joint being provided by a gasket 42 between a shoulder on the spark plug or the priming cock, as the case may be, and a contiguous shoulder in the chamber 40. The construction illus trated in Fig. 5 is ordinaril available only with extra large engines that have large valves, and therefore, correspondingly large spring containers or shells 15.

Having thus described my invention what I claim is:

1. As an improvement in internal combustion engines, a spring container for a puppet valve having a valve stem guide opening, and a chamber or chambers eccentric to the valve stem opening, and opening into the valve controlled port.

2. As an improvement in internal conibustion engines, a spring container fora puppet valve having a valve stem guide opening, a chamber eccentric to the valve stem guide opening and opening into the valve. controlled port, and an ignition device situated in said chamber.

3. As an improvement in internal combastion engines, a spring container for a puppet valve having a valve stem guide opening, a chamber eccentric to the valve stem guide opening and opening into the valve controlled port, and a' priming cool; connected with said chamber,

at. As an improvement in internal ccmand each opening bastion engines, a spring container for a puppet valve having a valve stem guide opening, a chain er eccentric to the valve stem guide opening and opening into the valve controlled port, an ignition device situated in said chamber, and a priming cock connected with a second eccentric chamber opening into the valve controlled port.

5. As an improvement in internal combustion engines, a spring container for a puppet valve having valve stem guide opening, and a plura ity of chambers concentric With. the valv stein guide opening port and adapted to receive a spark plug.

6. As an improvement in internal combustion engines, a spring container for a puppet valve having a valve stem guide opening, a plurality of chambers concentric ivith the valve stemguide opening and each opening into the valve controlled port and adapted to receive a spark plug, and-a spark plug in one of said chambers.

7. As an improvement in internal combustion engines, a spring container for a. puppet valve having a valve stem guide opening, a plurality of chambers concentric with the valve stem guide opening and each opening into the valve controlled port and adapted to receive a spark plug, a spark plug in one of said chambers, and filling plugs in other of said chambers.

in testimony that I claim the foregoing I have hereunto set my hand.

FRANK D. SHEPHERD.

into the valve controlled 

